<template>
  <div class="icons">
    <swiper :options="swiperOption">
      <swiper-slide v-for='(page, index) of pages' :key="index">
        <div class="icon" v-for='item of page' :key='item.id'>
          <div class="icon-img">
            <img class="icon-img-content" :src="item.imgUrl" />
          </div>
          <p class="icon-desc">{{item.desc}}</p>
        </div>
      </swiper-slide>
      <!-- Optional controls -->
      <div class="swiper-pagination" slot="pagination"></div>
    </swiper>
  </div>
</template>

<script>
export default {
  name: 'HomeIcons',
  props: {
    iconList: Array
  },
  data () {
    return {
      swiperOption: {
        pagination: '.swiper-pagination',
        autoplay: false
      }
    }
  },
  computed: {
    pages () {
      const pages = []
      this.iconList.forEach(function (item, index) {
        const page = Math.floor(index / 8)
        if (!pages[page]) {
          pages[page] = []
        }
        pages[page].push(item)
      })
      return pages
    }
  }
}
</script>

<style lang="stylus" scoped>
  @import '~styles/varibles.styl'
  @import '~styles/mixins.styl'
  .icons >>> .swiper-container
    height:0
    padding-bottom:50%
  .icons
    margin-top:.1rem
    .icon
      position:relative
      float:left
      width:25%
      padding-bottom:25%
      height:0
      .icon-img
        position:absolute
        top:0
        left:0
        right:0
        bottom:.44rem
        box-sizing:border-box
        padding:.15rem
        .icon-img-content
          display:block
          margin:0 auto
          height:100%
          margin-top: .16rem;
      .icon-desc
        position:absolute
        left:0
        bottom:0
        width:100%
        height:.44rem
        line-height:.44rem
        text-align: center;
        color:$darkTextColor
        ellipsis()
</style>
